Eloy schmitz



ELOY soHM-rrz, or NEW YORK, N. Y.

APPARATS FOR SUPPLYING FURNACES WITH PULVERIZED *MATERIAL Specification of Letters Patent No. 112,286, dated January 23, 1855.

To cll'whom t may ooncewaf` y Be it known that I, ELOY SCHMITZ, of the city, county, and State of New York, have invented a new and improved apparatusfor supplying forge and other blast furnaces or fires with pulverizedv coal oXids, or other substances to aid in the combustionorfthe reduction of ores, &c.`, ofwhichtheI follow-f' ing is a full, clear, and eXact description, reference bein -had to the accompanying drawings, making partl of this specification, in which- Q i Figure l, is a side elevation ;andFig; 2, a longitudinal vertical section. y

The same letters indicate like parts in n both the figures.

The object of myinvention is to introduce pulverized coal, or oXids or other substances into forge or otherI lires, excited by "a blast, whether such-pulverized substances are tobe introduced for the purpose of combustion or for the chemical change of the matter or matters under treatment.

By my said apparatus the pulverized substance is placed in a hopper from which it falls into the threads of a horizontal screw conductor which conducts it to a vertical tube called the charging tube which is 'provided with a valve at bottom, which is alternately opened to discharge into'a horizontal tube) called the discharge tube and placed within the blast pipe leading to the furnace so that the blast shall carry the pulverized substance to the furnace, the said discharge tube being provided with valves at the ends which are closed while the valve of the charging tube is open to permit the descent ofthe charge, and which, so soon as the valve of the charging tube is closed, are opened that the blast may carry the substance to the furnace, the valve of the charging tube preventing the blast from entering the charging part of the apparatus. Above the discharging tube there is a branch pipe opening into the atmosphere and governed by a valve which is opened when the valve of the charging tube is opened that any pressure of air in the apparatus due to the blast before it is shut off, and which, if not permitted to escape, would impede the descent of the pulverized substance from the charging tube. The descent of the substance from the charging tube is aided by the working of a punch rod wit-hin the charger.

' In the accompanying drawings A, B, represent a hopper which is to contain the pulverized substance,v to be introduced, the delivery aperture V, of which hopper is situated directly overl one end `of Va horizontal screw conductor Q, which conducts the said pulverized substance and discharges it4 into a vertical tube N, in which it is held by a l 'i valve'J, at bottom tobe presently described. The shaft D, of theendless screw lhas a spur wheelv C, which `receives a slow motion from a pinion A, on t-he shaft of a driving pulley B, which receives notion from some `first i moverf lThe inner end of the shaft D, of

the screw-conductor is provided with a small crank'R, whichv carries a punch rod S, that is thus worked up andy down inthe` tube N,

clogging therein.

The tube N, .is surrounded by an .outer .to prevent the pulverizing substancefrom screw conductor above described. ,The top of .this casingis covered with a plate e, f, which supports the hopper A', B, byj means of vertical rods g, g. The said plate haslan aperture directly above the tube N, governed by a cap plate WV, turning on a screw pin h,

to give` access to the tube N, for inspection. And the case O, hasa hole in the line yof the shaft D, covered by a plate X, lto give access when required, to the screw conductor.

The tube N, is made separate from andv properly fitted tothe casing O, and kept in ,its proper position by set screws b, Z).

The lower end of the cylindrical casinglO, has a flanch secured by bolts d, d, to the upper surface of a horizontal blast pipe Z, through which the blast, from some suitable blower passes, one end of the said blast pipe On a line with the lower end of the tube),

N, there is a short horizontal branch T, of

the cylindrical part of the case O. The lower end of the tube N, the outer end of the branch T, and the two ends of the horizontal tube P', are beveled off to an angle of about 45 degrees, and to each of these beveled ends is fitted a hinged or ap valve indicated on the drawings by J, I, M, and

L. The two valves J and I, are connected together yby a connecting rod t, and the other two M and L, by a connecting rod U, the rods being so connected that J and I, will open and shut together, and so with M and L. The valve I, is provided with an arm -and wrist pin which fits in a cam groove in the face of a wheel II, by which it is opened and shut; and the valv'e L, is governed in like manner by a cam wheel K, and both of these cam wheels are mounted on a vertical shaft Il, which receives motion by bevel wheels F G, from the shaft D, of the screw conductor. The cam wheel K, is within the blast pipe Z, and to prevent the escape of wind the shaft E, is surrounded by a stuiiing boX a. The cam grooves in the two wheels I-I, and K, `are such that when the valves J and I, are open the valves M and L, are closed, and vice versa.

The apparatus being set in motion and the hopper charged with the pulverized substance, say coal, it will fall from the hopper onto the screw conductor by which it will be conducted and discharged into the verti-y cal tube N, in which it is kept free and loose by the punch rod S.A The valves M, and L, are then closed which prevents the blast from entering the horizontal tube P, and the valve J, being opened the charge in the tube N, falls into t-he horizontal tube P', the valve I, being at the same time opened to form a communication with the atmosphere so that the falling of the substance may not be prevented by any excess of pressure due to the blast before the valves M, and L, were closed. The valves J and I, are then closed, to shut off all communication with the upper part of the apparat-us and the atmosphere, and immediately after the valves M and L, are opened so that the blast of air may pass through the cent-ral tube P', to carry the pulverized coal or other substance out and into the fire. In

this way successive charges of the pulverized substance is deposited in the tube P, and then exposed to' the force of the blast to be carried to the furnace.

Having thus described the construction and mode of operation of my invention I do not wish to be understood as limiting myself to the special construction and arrangement of the parts so long as the same ends are attained by merely formal changes.

What I claim as my invention and desire to secure by Letters Patent is` l. Arranging within the blast pipe of a furnace or other fire place another and smaller pipe or tube governed by valves to admit and cut off the blast, substantially as described, when this is combined with the vcharging tube also governed by a valve,

substantially asA specified, so that when the blast is forcing the pulverized substance from the tube within the blast pipe,VV the blast shall be cut ofi" from the charging tube, and when the lcharging tube is open for the liberation of the charge the blast shall be cut oli'l by the valves below, as set forth.

2. And I also claim in combination with the above charging and discharging tubes governed by valves, the employment of a branch tube governed by a valve opening to the atmosphere, to prevent. the pulverized substance from being held in the charging tube by any excess of pressure which may be due to the` entrance of the blastI during the time the valves of the discharging tube are opened, as set forth.

3. And I also claim in combination with the discharging and charging tubes the employment of the conductor, and the punch rod, substantially as described and for the purpose set forth.

E. SCHMITZ. Witnesses:

WM. H. BISHOP, ANDREW DE LACY. 

